Halftone
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Halftone is the reprographic technique that simulates continuous-tone imagery through the use of dots, varying either in size or in spacing, thus generating a gradient-like effect. "Halftone" can also
The first printed photo using a halftone in a Canadian periodical, October 30, 1869
A multicolor postcard by Jenny Nyström (1899) printed from hand-made halftone plates
This close-up of a halftone print shows that magenta on top of yellow appears as orange/red, and cyan on top of yellow appears as green.
Purple screens used in offset printing: Angles 90°, 105°, 165°
CMYK color model
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The CMYK color model is a subtractive color model used in color printing as well as describing the printing process. The abbreviation CMYK refers to the four color components used in printing: cyan, m
Halftone
…and film layers, color printing is made possible by repeating the halftone process for each subtractive color – most commonly using what is called the "CMYK color model". The semi-opaque property of ink allows halftone dots of different colors to create another optical effect: full-color imagery. Since the location of…
Early three-color process (1902)
Approximation using CMY colors